
The Mandelbrot set
of COMPLEX numbers is a little messy.
The Big Bang Theory Season 1, Episode 2

Leonard, you will be doing a series
of COMPLEX mathematical problems...
The Big Bang Theory Season 2, Episode 23

but by using a computer to solve
COMPLEX mathematical problems.
The Big Bang Theory Season 11, Episode 9

isn’t much more COMPLEX, anyway."
Money Heist Season 1, Episode 12

a massive inferiority COMPLEX.
The Big Bang Theory Season 11, Episode 15